k3s_server_post: add cilium_bgp_neighbors parameter

With the cilium_bgp_neighbors parameter it is possible to define
multiple BGP peer ASN & address pairs for Cilium.

Sample:

```
cilium_bgp_neighbors:
  - peer_address: 192.168.128.10
    peer_asn: 64512
  - peer_address: 192.168.128.11
    peer_asn: 64512
  - peer_address: 192.168.128.12
    peer_asn: 64512
```

It is possible to merge further lists with cilium_bgp_neighbors__*
parameters.

Sample:

```
cilium_bgp_neighbors__extra:
  - peer_address: 192.168.128.10
    peer_asn: 64512
cilium_bgp_neighbors:
  - peer_address: 192.168.128.11
    peer_asn: 64512
  - peer_address: 192.168.128.12
    peer_asn: 64512
```

This will result in the following list of BGP peer ASN & address pairs:

```
- peer_address: 192.168.128.10
  peer_asn: 64512
- peer_address: 192.168.128.11
  peer_asn: 64512
- peer_address: 192.168.128.12
  peer_asn: 64512
```

Signed-off-by: Christian Berendt <berendt@osism.tech>

.github/workflows/cache.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Check out the codebase
-        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # 4.2.0
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # 4.1.7
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 

.github/workflows/lint.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Check out the codebase
-        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # 4.2.0
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # 4.1.7
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 
@@ -45,7 +45,7 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: Checkout code
-        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # 4.2.0
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # 4.1.7
       - name: Ensure SHA pinned actions
         uses: zgosalvez/github-actions-ensure-sha-pinned-actions@0901cf7b71c7ea6261ec69a3dc2bd3f9264f893e # 3.0.12
         with:

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Check out the codebase
-        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # 4.2.0
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # 4.1.7
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 

roles/k3s_server_post/defaults/main.yml

@@ -16,7 +16,6 @@ cilium_exportPodCIDR: true  # noqa var-naming
 cilium_bgp_my_asn: 64513
 cilium_bgp_peer_asn: 64512
 cilium_bgp_neighbors: []
-cilium_bgp_neighbors_groups: ['k3s_all']
 cilium_bgp_lb_cidr: 192.168.31.0/24
 cilium_hubble: true
 cilium_mode: native

roles/k3s_server_post/meta/main.yml

@@ -72,7 +72,7 @@ argument_specs:
 
       cilium_bgp_neighbors_groups:
         description: Inventory group in which to search for additional cilium_bgp_neighbors parameters to merge.
-        default: ['k3s_all']
+        default: k3s_all
 
       cilium_bgp_lb_cidr:
         description: BGP load balancer IP range